/// <summary>Add tree entry to index</summary>
/// <param name="te">tree entry</param>
/// <returns>new or modified index entry</returns>
/// <exception cref="System.IO.IOException">System.IO.IOException</exception>
public virtual GitIndex.Entry AddEntry(TreeEntry te)
{
byte[] key = Constants.Encode(te.GetFullName());
GitIndex.Entry e = new GitIndex.Entry(this, te, 0);
entries.Put(key, e);
return(e);
}
/// <exception cref="System.IO.IOException"></exception>
internal virtual void ReadTree(string prefix, Tree t)
{
TreeEntry[] members = t.Members();
for (int i = 0; i < members.Length; ++i)
{
TreeEntry te = members[i];
string name;
if (prefix.Length > 0)
{
name = prefix + "/" + te.GetName();
}
else
{
name = te.GetName();
}
if (te is Tree)
{
ReadTree(name, (Tree)te);
}
else
{
GitIndex.Entry e = new GitIndex.Entry(this, te, 0);
entries.Put(Constants.Encode(name), e);
}
}
}
/// <summary>Helper for accessing tree/blob/index methods.</summary>
/// <remarks>Helper for accessing tree/blob/index methods.</remarks>
/// <param name="i"></param>
/// <returns>'/' for Tree entries and NUL for non-treeish objects</returns>
public static int LastChar(GitIndex.Entry i)
{
// FIXME, gitlink etc. Currently Trees cannot appear in the
// index so '\0' is always returned, except maybe for submodules
// which we do not support yet.
return(FileMode.TREE.Equals(i.GetModeBits()) ? '/' : '\0');
}
/// <exception cref="System.IO.IOException"></exception>
private void CheckWriteOk()
{
for (Iterator i = entries.Values.Iterator(); i.HasNext();)
{
GitIndex.Entry e = (GitIndex.Entry)i.Next();
if (e.GetStage() != 0)
{
throw new NGit.Errors.NotSupportedException(JGitText.Get().cannotWorkWithOtherStagesThanZeroRightNow
);
}
}
}
/// <summary>Add the content of a file to the index.</summary>
/// <remarks>Add the content of a file to the index.</remarks>
/// <param name="wd">workdir</param>
/// <param name="f">the file</param>
/// <param name="content">content of the file</param>
/// <returns>a new or updated index entry for the path represented by f</returns>
/// <exception cref="System.IO.IOException">System.IO.IOException</exception>
public virtual GitIndex.Entry Add(FilePath wd, FilePath f, byte[] content)
{
byte[] key = MakeKey(wd, f);
GitIndex.Entry e = entries.Get(key);
if (e == null)
{
e = new GitIndex.Entry(this, key, f, 0, content);
entries.Put(key, e);
}
else
{
e.Update(f, content);
}
return(e);
}
/// <summary>Read the cache file into memory.</summary>
/// <remarks>Read the cache file into memory.</remarks>
/// <exception cref="System.IO.IOException">System.IO.IOException</exception>
public virtual void Read()
{
changed = false;
statDirty = false;
if (!cacheFile.Exists())
{
header = null;
entries.Clear();
lastCacheTime = 0;
return;
}
cache = new RandomAccessFile(cacheFile, "r");
try
{
FileChannel channel = cache.GetChannel();
ByteBuffer buffer = ByteBuffer.AllocateDirect((int)cacheFile.Length());
buffer.Order(ByteOrder.BIG_ENDIAN);
int j = channel.Read(buffer);
if (j != buffer.Capacity())
{
throw new IOException(MessageFormat.Format(JGitText.Get().couldNotReadIndexInOneGo
, j, buffer.Capacity()));
}
buffer.Flip();
header = new GitIndex.Header(buffer);
entries.Clear();
for (int i = 0; i < header.entries; ++i)
{
GitIndex.Entry entry = new GitIndex.Entry(this, buffer);
GitIndex.Entry existing = entries.Get(entry.name);
entries.Put(entry.name, entry);
if (existing != null)
{
entry.stages |= existing.stages;
}
}
lastCacheTime = cacheFile.LastModified();
}
finally
{
cache.Close();
}
}
/// <summary>Check out content of the specified index entry</summary>
/// <param name="wd">workdir</param>
/// <param name="e">index entry</param>
/// <exception cref="System.IO.IOException">System.IO.IOException</exception>
public virtual void CheckoutEntry(FilePath wd, GitIndex.Entry e)
{
ObjectLoader ol = db.Open(e.sha1, Constants.OBJ_BLOB);
FilePath file = new FilePath(wd, e.GetName());
file.Delete();
FileUtils.Mkdirs(file.GetParentFile(), true);
FileOutputStream dst = new FileOutputStream(file);
try
{
ol.CopyTo(dst);
}
finally
{
dst.Close();
}
if (Config_filemode() && File_hasExecute())
{
if (FileMode.EXECUTABLE_FILE.Equals(e.mode))
{
if (!File_canExecute(file))
{
File_setExecute(file, true);
}
}
else
{
if (File_canExecute(file))
{
File_setExecute(file, false);
}
}
}
e.mtime = file.LastModified() * 1000000L;
e.ctime = e.mtime;
}
/// <summary>Write content of index to disk.</summary>
/// <remarks>Write content of index to disk.</remarks>
/// <exception cref="System.IO.IOException">System.IO.IOException</exception>
public virtual void Write()
{
CheckWriteOk();
FilePath tmpIndex = new FilePath(cacheFile.GetAbsoluteFile() + ".tmp");
FilePath Lock = new FilePath(cacheFile.GetAbsoluteFile() + ".lock");
if (!Lock.CreateNewFile())
{
throw new IOException(JGitText.Get().indexFileIsInUse);
}
try
{
FileOutputStream fileOutputStream = new FileOutputStream(tmpIndex);
FileChannel fc = fileOutputStream.GetChannel();
ByteBuffer buf = ByteBuffer.Allocate(4096);
MessageDigest newMessageDigest = Constants.NewMessageDigest();
header = new GitIndex.Header(entries);
header.Write(buf);
buf.Flip();
newMessageDigest.Update(((byte[])buf.Array()), buf.ArrayOffset(), buf.Limit());
fc.Write(buf);
buf.Flip();
buf.Clear();
for (Iterator i = entries.Values.Iterator(); i.HasNext();)
{
GitIndex.Entry e = (GitIndex.Entry)i.Next();
e.Write(buf);
buf.Flip();
newMessageDigest.Update(((byte[])buf.Array()), buf.ArrayOffset(), buf.Limit());
fc.Write(buf);
buf.Flip();
buf.Clear();
}
buf.Put(newMessageDigest.Digest());
buf.Flip();
fc.Write(buf);
fc.Close();
fileOutputStream.Close();
if (cacheFile.Exists())
{
if (db.FileSystem.RetryFailedLockFileCommit())
{
// file deletion fails on windows if another
// thread is reading the file concurrently
// So let's try 10 times...
bool deleted = false;
for (int i_1 = 0; i_1 < 10; i_1++)
{
if (cacheFile.Delete())
{
deleted = true;
break;
}
try
{
Sharpen.Thread.Sleep(100);
}
catch (Exception)
{
}
}
// ignore
if (!deleted)
{
throw new IOException(JGitText.Get().couldNotRenameDeleteOldIndex);
}
}
else
{
if (!cacheFile.Delete())
{
throw new IOException(JGitText.Get().couldNotRenameDeleteOldIndex);
}
}
}
if (!tmpIndex.RenameTo(cacheFile))
{
throw new IOException(JGitText.Get().couldNotRenameTemporaryIndexFileToIndex);
}
changed = false;
statDirty = false;
lastCacheTime = cacheFile.LastModified();
db.FireEvent(new IndexChangedEvent());
}
finally
{
if (!Lock.Delete())
{
throw new IOException(JGitText.Get().couldNotDeleteLockFileShouldNotHappen);
}
if (tmpIndex.Exists() && !tmpIndex.Delete())
{
throw new IOException(JGitText.Get().couldNotDeleteTemporaryIndexFileShouldNotHappen
);
}
}
}
